1997-2001 Explorer metal thermostat housing with two temp. sensors. Your original sensors were screw in type sensors. To use my metal housing, you will need two clip in style temp. sensors and 2 metal clips to hold the sensors in the housing.I sell theclips but not the sensors at this time. The sensors can be purchased on amazon, ebay, or any auto parts store and of course at Ford. Housing comes with o-rings and custom gasket.---Now includes the new product gasket that goes between the lower housing and the cylinder head, adds 200% more sealing surface. This includes two clips, and 3 upper bolts and three long bolts.